Variable timing system, particularly for an internal combustion

Details Variable timing system, particularly for an internal combustion Variable timing system, particularly for an internal combustion

1991-02-15

1992-05-19

Okonsky, David A.

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

123 9017, F01L 134

Patent

active

051138131

ABSTRACT:
A variable timing system for an internal combustion engine, whereby at least one valve is controlled by a cam via the interposition of a rocker arm. The cam presents a first and second profile formed side by side and providing for different lift/rotation strategies, and the rocker arm consists of two side by side, longitudinal elements connected together, a first of which cooperates permanently with the first cam profile, and a second of which corresponds with the second cam profile and cooperates with means whereby it is set selectively to a first position, wherein the second element of the rocker arm cooperates with the second cam profile, and a second position wherein the second element of the rocker arm is detached from the cam.

REFERENCES:
patent: 4151817 (1979-05-01), Mueller
patent: 4726332 (1988-02-01), Nishimura et al.
patent: 4768467 (1988-09-01), Yamada et al.
patent: 4771742 (1988-09-01), Nelson et al.
patent: 4844023 (1989-07-01), Konno et al.
patent: 4848180 (1989-07-01), Mills

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